AD8632AR-REEL7

Overview

The AD8632AR-REEL7 is a dual, low-power, rail-to-rail input and output operational amplifier from Analog Devices. It operates on a single supply voltage ranging from 1.8 V to 6 V. The device features a gain-bandwidth product of 5 MHz at 5 V and 4 MHz at 1.8 V. Typical supply current is 225 µA per amplifier at 1.8 V. It has a maximum input offset voltage of 4 mV and a slew rate of 2 V/µs at 1.8 V. The component is housed in an 8-lead SOIC package and is specified over the extended industrial temperature range of –40°C to +125°C.

Feature Summary

• Rail-to-rail input and output capability allows full signal swing across the entire supply voltage range.
• Low power consumption with typical supply current as low as 225 µA per amplifier at 1.8 V.
• Wide bandwidth suitable for high-speed applications, featuring a 5 MHz gain-bandwidth product at 5 V.
• Space-saving 8-lead SOIC packaging designed for compact circuit board layouts.

Applications

• Portable communications equipment
• Sensor interface circuits
• Active filters
• PCMCIA cards
• ASIC input drivers

Procurement Notes

Verify that the ordering suffix AR-REEL7 corresponds to the 8-lead SOIC package and reel quantity specifications defined in the official Analog Devices documentation. Confirm the part status remains active and matches the required temperature grade. Ensure compatibility with existing PCB footprints for the SOIC-8 form factor before finalizing procurement decisions.

Selection Notes

Select this component when designing battery-powered systems requiring low quiescent current and wide dynamic range. The rail-to-rail architecture is optimal for single-supply applications operating near minimum battery discharge voltages. Consider the 5 MHz bandwidth for signal processing tasks where moderate speed and precision are necessary without excessive power draw.

Part Context

This dual-channel variant belongs to the AD8631/AD8632 family of precision amplifiers fabricated using Analog Devices' XFCB process. While the AD8631 provides a single channel in smaller packages, the AD8632 integrates two identical amplifiers in an 8-lead SOIC or µSOIC footprint. This configuration supports differential signaling and multi-stage filtering within a reduced physical area.

Replacement Considerations

The AD8632ARM2 serves as a pin-compatible alternative utilizing the 8-lead µSOIC package instead of the standard SOIC.

FAQ

Does the AD8632 exhibit phase reversal when the input exceeds the supply rails?

No, the AD8632 does not exhibit phase reversal even if the input signal exceeds the supply voltage by more than 0.6 V.

What is the mechanism behind the rail-to-rail input stage?

The input stage utilizes two parallel complementary differential pairs: one NPN pair and one PNP pair, allowing operation across the full common-mode voltage range.